Improved wrench



AUNITED STATES PATENT OEEICE.

JOHN W. PENNEY, OF MEOHANIO FALLS, MAINE.

IMPROVED WRENCH.

Specication forming part ot` Letters Patent No. 44,653, dated October l1, 1964.

To all whom it 'may concern:

Be it known that I, JOHN NV. PENNEY, of Mtchanic Falls, in the county of Androscoggin and'Sta-te of Maine, have invented a new and Improved W'rench; and I do hereby de- ('ln'e that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure l is a side View of my invention; Fig. 2, an edge View of the same.

Similar letters of reference indicate like parts.

'lhis invention relates to a new and improved wrench of that class which are provided with an adjustablejaw; and it consists in an improved arrangement of the latter, whereby the wrench may be readily adapted or applied to nuts of different sizes.

, A represents a shank or handle, on one end of which ajaw, B, is formed or made; and O is a movable jaw, the back end of which has a tenon, a, the latter being tted in a slot, b, in the shank, and allowed to slide freely up and down therein, the shoulder of the tenen bearing against the front edge of the shank A, and t-he back part of the tenon a projecting beyond the back edge of the same, and through a slot, o, in a spring, D, which is secured by a screw, d, to the back of the jaw G. The upper end of' the spring D is provided with a lip, e, which fits into a rack,f, on the back edge ofthe shank, and the lower end of the spring bears upon the same.

rlhe spring proper is the portion below the screw d, and it has a tendencyv to keep the lip e engaged with the rack f, to hold the jaw C in position. This jaw C maybe readily moved by simply pressing the thumb upon the spring, which throws the lip e out from the rackf, and when the wrench is adjusted to a nut and turned the pressure exerted against the jaw (l has a tendency to press the lip c into a notch ofthe rack; consequently all casual slipping of iaw U is avoided.

The wrench may be constructed at a very moderate cost, audit is extremely durable, there being no parts liable to be deranged by use or to get out of repair.

I claim as new and desire to secure by Letters Patentlhe sliding jaw O, provided with a tenon, u., which is itted in a slot, b, in the shank A ofthe stationaryjaw B, in combination with the rack j' on the back of the shank A, the spring D, tted on the tenon a., and secured to jaw O by a screw, d, and having a lip, e, to engage with the rack f, allbeing arranged substantially as and for the purpose set forth.

JOHN W. PENNEY. Tit nesses J oHN DORE, J osEPI-I BUCKMAN. 

